Mosquito season in Howard County, NE: when it starts and ends
Mosquito months in Howard County
In a normal year mosquito season in Howard County, NE starts around April 13 and ends around October 22, about 27 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Howard County, and when
- Start tipping out standing water weekly by March 30.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 22.
- 8 West Nile cases since 2016 (last 2023): you should use repellent at dusk June to August, more so if over 60.
Howard County against the rest of NE
Howard County has the 10th longest season of 93 NE counties, at 192 days against 200 in Richardson County and 127 in Sioux County. Its mean temperature is 51.6°F.
- Clay County: April 13 to October 23 (192 days, 4 WNV)
- Hall County: April 13 to October 22 (192 days, 37 WNV)
- Gage County: April 14 to October 23 (192 days, 6 WNV)
- Hamilton County: April 14 to October 22 (192 days, 15 WNV)
West Nile in Howard County
From 1999 to 2025, CDC ArboNET counted 25 human West Nile cases in Howard County (7 neuroinvasive) across 12 years. The worst was 2003 with 10; the latest was 2023.
More: how the dates are worked out · reading the West Nile counts.